Improvement in machines for cutting boot-legs



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Machines for -Gutting Boot Legs.

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Machines for Cutting Bout Legs.

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Y Machines for Cutting Boot Legs.v N0,l52,907a Patented1u|y14,1874.

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UNITED STATES i PATENT GEEICJE.

DANIEL LYNAHAN, OF BUFFALO, NEW YORK.

IMPROVEMENT IN MACHINES FOR CUTTING BOOT-LEGS.

Specification forming part of Letters Patent No. 152,907, dated July 14,1874; application filed April 29,1874.

To all 'whom it may concern:

Be it known that I, DANIEL LYNAHAN, of Buffalo, in the county of Erieand State of New York, have invented certain Improvements in Machinesfor cutting Boot-Legs, of which the following is a specification:

The object of this invention is to provide a machine that will cut outthe backs and tops of boot-leg fronts of any size, after they have beencrimped, several being cut in one operation.

The improvements are fully hereinafter described and claimed.

In the drawings, Figure l is a front elevation Fig. 2, a verticalsection through the middle of the machine; Fig. 3, top -plan view; Fig.4, perspective view, showing the shape of the back-knife.

A A represent the side standards of the main frame B. In the standardsis a longitudinal frame, O, working up and down by means of outsidecrank-shafts a a, one each side, and attached to counterweight cranks bb, operated by shaft c and treadle d, or any other power desired.

The longitudinal frame U is iliade adjustable higher or lower by meansof nuts c c, thereby lengthening or shortening the crankshafts a a. Thisframe O, which is the knifeframe, carries a curved knife, D, of peculiarform, as shown in Fig. 4, which conforms in outline to the form of thefront `of a bootleg. A

The shape of this knife is one of the important features of myinvention, as it cuts, in one operation, from one to any desired numberof legs, thereby saving greatly in handlabor, Src., as hereinafter moreparticularly explained.

In addition to the curved-back knife D, I 'provide an end knife, E,which sets at right angles to the other in a frame, f, of its own, inconnection with the frame C, and cuts the top off the boot-legs at thesame moment that the frnts are cut.-

'Irhis knife is made adjustable back or for.- ward, to cut longer orshorterl legs, by means of slots g and guides h; and 4one or more ofthelatter are divided off into sizes, and marked with lines and gures todenote the different sizes of boots.

F indicates the form or legfholder, conforming in shape to bootlegfronts after they y have been crimped, and which, when laid date thediiferent sizes of boot-fronts to be cnt, by means of slots 7' j andguides 7c k in in the metal table G, the form havingdownwardly-projecting lugs movingin the slots j j. It is operated orkept in position by a screw-rod, l, and thumb-screw m, winged nut n, ortheir equivalents.

The guides 7c are marked in sizes, like guides 7L, so that the form Fcan be set to cut any sizes desired.

On top of the metaltable G is set a wooden knife-bed, H, so that whenthe knife cuts through the leather it is kept from being dulled, as iscommon in other machines.

'By my device the fronts of a number of boot-legs are cut in oneoperation, as fast as` they can be put in and taken out, doing away withall hand-labor, the usual method being to employ patterns, which arelaid on each leg, and cut out by hand separately.

I claiml. The combination of the curved knife D, attached to the frameG, with the crank-shaft a, crank b, and shaft c, for moving the knii'evertically, substantially as described.

2. The combination of the curved knife D andthe adjustable end knife E,with a bed, H, and mechanism, substantially as described, for impartinga vertical movement to the curved and end knives D and E, as set forth.

3. The form F, having the flange i, as and for the purpose specified.

4:.,The adjustable form or front holder F, with the flange c', incombination with the knivesD and E, as and for the purpose described.

5. The table G, b ed H, guides linfslotsjj, and adjusting screw-.rod l,in combination with the form F and knives D E, as and for the purposespecified.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

Witnesses: DANIEL LYNAHAN.

J. R. BRAKE, JOHN C. BROWN.

